74xx_7xx/mpc86xx/ppmc7xx: Fix do_reset() declaration

The following commit:

commit 882b7d726febe65579d6502c271412ecb05821d7
Author: Mike Frysinger <vapier@gentoo.org>
Date:   Wed Oct 20 03:41:17 2010 -0400

    do_reset: unify duplicate prototypes

missed the 74xx_7xx and mpc86xx arches and the ppmc7xx board do_reset()
functions which resulted in build errors such as:
  cpu.c:128: error: conflicting types for 'do_reset'
  include/command.h:102: error: previous declaration of 'do_reset' was here

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/arch/powerpc/cpu/mpc86xx/cpu.c b/arch/powerpc/cpu/mpc86xx/cpu.c
index 4e90fd2..ffcc8e6 100644
--- a/arch/powerpc/cpu/mpc86xx/cpu.c
+++ b/arch/powerpc/cpu/mpc86xx/cpu.c
@@ -123,8 +123,7 @@
 }
 
 
-void
-do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
 	volatile ccsr_gur_t *gur = &immap->im_gur;
@@ -137,6 +136,8 @@
 
 	while (1)
 		;
+
+	return 1;
 }